Identify Complementary and Supplementary Measures

Which equation can be used to solve for the value of x?

• (4x-4)°=(21x+9)°

• (21x+9)°-(4x-4)°=180°

• (4x-4)°+(21x+9)°=90°

• (4x-4)°+(21x+9)°=180°

These angles are...

• complementary angles.

• supplementary angles.

• vertical angles.

• straight angles.

These angles are...

• complementary.

• supplementary.

• vertical.

• adjacent.

What is the value of x?

• x=45

• x=36

• x=12

• x=10

Identify the true statement about these angles.

• ∠WYX and ∠XYZ are adjacent and complementary.

• ∠XYZ is 24° and is adjacent to ∠WYX.

• ∠XYZ is 136° and is a supplement to ∠WYX.

• ∠WYX and∠XYZ are vertical angles.

Which equation can be used to solve for the value of x?

• 119°+(6x+7)°=90°

• 119°=(6x+7)°

• 119°+(6x+7)°=180°

• 180°-119°=(6x)°

The angle relationship shown is -

• complementary angles

• supplementary angles

• vertical angles

• angle bisector

The angle relationship shown is - 

• complementary angles

• supplementary angles

• vertical angles

• adjacent angles

If ∠BPD and ∠DPC have a sum of 72°. What is ∠APC?

• 18°

• 90°

• 108°

• 180°

• 15
• 16
• 18
• 19